Unconditionally rebuild QVM tools every time

cmake/utils/qvm_tools.cmake

@@ -20,6 +20,7 @@ ExternalProject_Add(qvm_tools
         -DCMAKE_MODULE_PATH=${CMAKE_MODULE_PATH}
         -DCMAKE_MINIMUM_REQUIRED_VERSION=${CMAKE_MINIMUM_REQUIRED_VERSION}
         ${BUILD_TYPE_ARG}
+    BUILD_ALWAYS TRUE
     INSTALL_COMMAND "")
 
 set(Q3LCC ${TOOLS_DIR}/$<CONFIG>/q3lcc)